9977427 has 6 divisors (see below), whose sum is σ = 14411852. Its totient is φ = 6651612.

The previous prime is 9977411. The next prime is 9977437. The reversal of 9977427 is 7247799.

It is a happy number.

9977427 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9977427 - 2⁴ = 9977411 is a prime.

It is a d-powerful number, because it can be written as 9³ + 9³ + 7² + 7⁵ + 4¹¹ + 2³ + 7⁸ .

It is a Duffinian number.

9977427 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9977437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554293 + ... + 554310.

Almost surely, 2^9977427 is an apocalyptic number.

9977427 is a deficient number, since it is larger than the sum of its proper divisors (4434425).

9977427 is a wasteful number, since it uses less digits than its factorization.

9977427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108609 (or 1108606 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 9977427 is about 3158.7065390758. The cubic root of 9977427 is about 215.2812400279.

It can be divided in two parts, 9977 and 427, that added together give a square (10404 = 102²).

The spelling of 9977427 in words is "nine million, nine hundred seventy-seven thousand, four hundred twenty-seven".